e) the purpose of a range of utility software :

1) disk formatting: to divide up the surface of a disk into more easily manageable sectors.

2) file handling: to manage the files that are stored on a computer software system

3) virus checkers: used to check any files on or entering the system for viruses. They scan all files in different locations and the content of the memory, also unexpected program behaviour. and anywhere else where it is relevant for the intention of identifying/removing maleware (malware is the generic category of any programs that perform a negative effect on your computer without your knowledge or permission). This utility purpose is so that all files are protected from viruses and keeping them safe so they aren't damaged by viruses entering the system.

4) File compression: the system utility programs convert data into a format that takes up far less memory space, enabling faster communications. Compression software is particularly useful when data is being sent from one computer to another.